const formatTime = date => {
  const year = date.getFullYear()
  const month = date.getMonth() + 1
  const day = date.getDate()
  const hour = date.getHours()
  const minute = date.getMinutes()
  const second = date.getSeconds()

  return [year, month, day].map(formatNumber).join('/') + ' ' + [hour, minute, second].map(formatNumber).join(':')
}

const formatNumber = n => {
    n = n.toString()
    return n[1] ? n : '0' + n
}
const plusxing = (str, frontLen, endLen) => {
    let len = str.length - frontLen - endLen;
    let xing = '';
    for (let i = 0; i < len; i++) {
        xing += '*';
    }
    return str.substring(0, frontLen) + xing + str.substring(str.length - endLen)
}
module.exports = {
    formatTime: formatTime,
    plusxing: plusxing
}
